帯広畜産大学 学術情報リポジトリ >
000研究域 >
00B臨床獣医学研究部門 >
00B01学術雑誌論文 >

このアイテムの引用には次の識別子を使用してください: http://ir.obihiro.ac.jp/dspace/handle/10322/4068

タイトル: Ultrasound Imaging of Mammary Glands in Dairy Heifers at Different Stages of Growth
著者: NISHIMURA, Maki
YOSHIDA, Tetsuya
EL-KHODERY, Sabry
MIYOSHI, Masafumi
FURUOKA, Hidefumi
YASUDA, Jun
MIYAHARA, Kazuro
古岡, 秀文
宮原, 和郎
キーワード: dairy heifer
mammary gland
ultrasound
発行日: 2011
出版者: 日本獣医学会
抄録: To obtain B-mode ultrasound images of mammary glands in dairy heifers at different stages of growth, 25 clinically normal Holstein heifers were used. The heifers were divided into 5 groups (n=5/group) by stage of their growth: 2-month-old (group 1), 5-month-old (group 2), postpuberty (group 3), mid (group 4), and late (group 5) pregnancy. Furthermore, the sections of mammary glands were observed grossly at postmortem examination in one heifer in each group. Ultrasound images varied with the development of mammary glands. In group 1, the mammary glands had distinctive ultrasonographic findings: an oval to fusiform homogeneous hypoechoic structure. In all groups except group 1, mammary tissue consists of two major areas: a homogeneous, medium echogenic area and a poorly-defined, heterogeneous, hypoechoic area mostly in the superficial part. The superficial hypoechoic area spread more extensively and more irregularly with the development of mammary glands. Most pregnant heifers had irregular and extremely hypoechoic or anechoic areas like lactiferous sinus in the glands. The gross findings of mammary glands suggested that the hypoechoic areas of various shapes represented the lactiferous sinus and ducts. Thus, these results indicate that B-mode ultrasound imaging can visualize the internal structures of udders and could be a useful tool for evaluation of mammary glands in heifers.
URI: http://ir.obihiro.ac.jp/dspace/handle/10322/4068
ISSN: 1347-7439
0916-7250
出現コレクション:00B01学術雑誌論文

このアイテムのファイル:

ファイル 記述 サイズフォーマット
miyahara73(1), 19-24, 2011.pdf750.58 kBAdobe PDF見る/開く

このリポジトリに保管されているアイテムはすべて著作権により保護されています。

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2006 MIT and Hewlett-Packard - ご意見をお寄せください